<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>websock聊天室</title>
  <style>
    .href{
      width: 100px;
      height: 100px;
    }
    .href img{
      width: 100px;
      height: 100px;
      margin: 10px;
      border: 1px solid #ddd;
    }
  </style>
</head>
<body>
  <a href="/a" class="href" target="_blank">
    <img src="./img/a.png" alt="" srcset="">
  </a>
  <a href="/b" class="href" target="_blank">
    <img src="./img/b.png" alt="" srcset="">
  </a>
</body>
</html>